As somebody else already said, if you are leasing another car from them then this most likely won't even be an issue. They are desperate for sales and there are deals on the table. I've heard of people turning in their leases early by as much as 5 months and get the remaining lease payments and initial payments of the new lease forgiven and no lease end costs. However, if you are not going to lease/buy a new car, keep in mind that due to COVID, MB has temporarily suspended the lease end pre-inspection, so you can't find out in advance what lease end costs you gonna incur, and several dealerships are currently not even accepting lease returns, unless you take another car off their hands.